Sentences with phrase «when ancestral humans»
The scientists argue that the jump in the frequency of burnt flints represents the time when ancestral humans learned to control fire, either by kindling it or by keeping it burning between natural wildfires.
http://www.sciencemag.org/ Not exact matches
When transplanted into human cells in the laboratory, the mammoth TRPV3 gene produced a protein that is less responsive to heat than an ancestral elephant version of the gene.
Humans go back to the Pleistocene [about 2.5 million years ago], but the emotional part of the brain goes back much further, all the way to the time when ancestral mammals evolved away from reptiles.
Much of our enjoyment of earthdog tests as human participants derives from the clear, obvious, and exuberant joy our dogs display when they are given an opportunity to do something similar to their ancestral purpose: going to ground, working quarry, partnering with a human handler.